STR-X6729_V Просмотр технического описания (PDF) - Allegro MicroSystems
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STR-X6729_V Datasheet PDF : 9 Pages
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STR-X6729 Off-Line Quasi-Resonant Switching Regulators
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Test Conditions
Min. Typ. Max. Units
ELECTRICAL CHARACTERISTICS for Controller (MIC)1, valid at TA = 25°C, VCC = 20 V, unless otherwise specified
Power Supply Start-up Operation
Operation Start Voltage
Operation Stop Voltage
Circuit Current In Operation
Circuit Current In Non-Operation
Oscillation Frequency
Soft Start Operation Stop Voltage
Soft Start Operation Charging Current
Normal Operation
VCC(ON) VCC = 0→20 V
VCC(OFF) VCC = 20→8.8 V
ICC(ON)
ICC(OFF) VCC = 15 V
fosc
VSSOLP(SS) VSS/OLP increasing
ISSOLP(SS) VSS/OLP = 0 V
16.3
18.2
19.9
V
8.8
9.7
10.6
V
–
–
6
mA
–
–
100
μA
19
22
25
kHz
1.1
1.2
1.4
V
–710 –550 –390 μA
Bottom-Skip Operation Threshold Voltage 1
Bottom-Skip Operation Threshold Voltage 2
Overcurrent Detection Threshold Voltage
OCP/BD Terminal Outflow Current
Quasi-Resonant Operation Threshold Voltage 1
Quasi-Resonant Operation Threshold Voltage 2
FB Terminal Threshold Voltage
FB Terminal Inflow Current (Normal Operation)
Standby Operation
VOCPBD(BS1)
VOCPBD(BS2)
VOCPBD(LIM) VOCP/BD falling
IOCPBD VOCP/BD = –0.95 V
VOCPBD(TH1) VOCP/BD falling
VOCPBD(TH2) VOCP/BD rising
VFB(OFF) VFB rising
IFB(ON) VFB = 1.6 V
–0.720 –0.665 –0.605 V
–0.485 –0.435 –0.385 V
–0.995 –0.940 –0.895 V
–250 –100
–40
μA
0.28
0.40
0.52
V
0.67
0.80
0.93
V
1.32
1.45
1.58
V
600
1000 1400
μA
Standby Operation Start Voltage
Standby Operation Start Voltage Interval
Standby Non-Operation Circuit Current
FB Terminal Inflow Current, Standby Operation
FB Terminal Threshold Voltage, Standby Operation
Minimum On Time
Protection Operation
VCC(S)
VCC(SK)
ICC(S)
IFB(S)
VFB(S)
tON(MIN)
VCC = 0→15 V, VFB = 1.6 V
VCC(SK) = VCC(S) – VCC(OFF)
VCC = 10.2 V, VFB = 1.6 V
VCC = 10.2 V, VFB = 1.6 V
VCC = 15 V, VFB rising
10.3
11.2
12.1
V
1.10
1.35
1.65
V
–
20
56
μA
–
4
14
μA
0.55
1.10
1.50
V
0.75
1.15
1.55
μs
Maximum On Time
tON(MAX)
27.5
32.5
39.0
μs
Overload Protection Operation Threshold Voltage VSSOLP(OLP)
4.0
4.9
5.8
V
Overload Protection Operation Charging Current
ISSOLP(OLP) VSS/OLP = 2.5 V
–16
–11
–6
μA
Overvoltage Protection Operation Voltage
VCC(OVP) VCC = 0→30 V
25.5
27.7
29.9
V
Latch Circuit Holding Current2
ICC(H)
VCC(OFF) – 0.3 V
–
45
140
μA
Latch Circuit Release Voltage2
VCC(La.OFF) VCC = 30→6 V, OVP operating
6.0
7.2
8.5
V
ELECTRICAL CHARACTERISTICS for MOSFET, valid at TA = 25°C, unless otherwise specified
Drain-to-Source Breakdown Voltage
VDSS
IDSS = 300 μA
450
–
–
V
Drain Leakage Current
IDSS
VDSSS = 450 V
–
–
300
μA
On Resistance
RDS(on) IDS = 4.0 A
–
–
0.189 Ω
Switching Time
tf
–
–
700
ns
Thermal Resistance
Rθch-F Channel to internal frame
–
–
0.99 °C/W
1Current polarity with respect to the IC: positive current indicates current sink at the terminal named, negative current indicates source at the
terminal named.
2The latch circuit means a circuit operated OVP and OLP.
6
STRX6729DS
SANKEN ELECTRIC CO., LTD.
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